Parent Company Only Financial Information - Condensed Statements of Financial Condition (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash and due from banks	$ 172,157	$ 151,754
Goodwill	17,636	17,636
Other assets	167,009	179,084
Total assets	8,537,236	8,422,946
Subordinated debentures	187,630	186,965
Other liabilities	170,035	161,349
Total liabilities	7,867,399	7,745,789
Common stock	341	341
Additional paid-in capital	264,534	264,332
Treasury stock, at average cost (5,221,813 shares and 4,611,232 shares, respectively)	(106,070)	(98,535)
Retained earnings	549,683	547,507
Accumulated other comprehensive loss, net of taxes	(38,651)	(36,488)
Total stockholders' equity	669,837	677,157	$ 679,628	$ 618,997
Total liabilities and stockholders' equity	8,537,236	8,422,946
Holding Company
Cash and due from banks	103,919	22,723
Other securities	1,437	1,516
Investment in Bank	799,324	890,828
Goodwill	2,185	2,185
Other assets	5,395	3,681
Total assets	912,260	920,933
Subordinated debentures	187,630	186,965
Junior subordinated debentures, at fair value	47,850	50,507
Other liabilities	6,943	6,304
Total liabilities	242,423	243,776
Common stock	341	341
Additional paid-in capital	264,534	264,332
Treasury stock, at average cost (5,221,813 shares and 4,611,232 shares, respectively)	(106,070)	(98,535)
Retained earnings	549,683	547,507
Accumulated other comprehensive loss, net of taxes	(38,651)	(36,488)
Total stockholders' equity	669,837	677,157
Total liabilities and stockholders' equity	$ 912,260	$ 920,933